To remove an existing persistence instance, use the following rhino-console command or related MBean operation.
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A persistence instance cannot be removed while it is referenced by a persistence resource or JDBC resource. | 
Console command: removepersistenceinstance
Command  | 
removepersistenceinstance <name> Remove an existing persistence instance configuration.  | 
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Example  | 
$ ./rhino-console removepersistenceinstance oracle Removed persistence instance oracle  | 
MBean operation: removePersistenceInstance
MBean  | 
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Rhino operation  | 
public void removePersistenceInstance(String name)
    throws NullPointerException, NameNotFoundException,
      InvalidStateException, ConfigurationException;
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